String-Shaped Denture Base Material Package for Precision Application

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Solution Overview

Problem

The production efficiency and quality of dentures are compromised when inexperienced operators use the conventional method involving reference dentures, as they struggle with accurately applying the curable denture base material without excess or deficiency.

Innovation Solution

A denture base material package containing a string-shaped photocurable material and a light-shielding member, which facilitates precise application of the material by ensuring the right amount is used, regardless of operator skill level.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional method involving reference dentures is used, then denture production can be facilitated, but operation efficiency and quality are reduced when inexperienced operators are involved

Engineering Contradiction:

Improveease of operationVSAvoidproductivity

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The denture base material is pre-formed into a string shape with a specific length corresponding to the peripheral edge portion of the mucosal surface, and packaged in a light-shielding container. This preliminary preparation of the material in the correct form and quantity eliminates the need for operators to measure and prepare the material during the procedure, thereby improving ease of operation while maintaining high productivity regardless of operator experience level.

Inventive Principle:

Principle #10Preliminary action

2Ease of manufacture

If curable denture base material is applied without precise control, then the application process is simple, but excess or deficiency of material occurs reducing quality

Engineering Contradiction:

Improveease of manufactureVSAvoidmanufacturing precision

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The denture base material is transformed from a bulk material into a string-shaped form with a specific cross-sectional area and length. This parameter change allows the material to be applied precisely along the peripheral edge portion of the mucosal surface, ensuring accurate material quantity and distribution while simplifying the application process.

Inventive Principle:

Principle #35Parameter changes

3Ease of manufacture

If photocurable denture base material is stored in a transparent container, then the material is easily visible, but the material may cure prematurely due to light exposure

Engineering Contradiction:

Improveease of manufactureVSAvoidreliability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The denture base material is packaged in a light-shielding container, which acts as a protective barrier that prevents light from reaching the photocurable material. This container maintains the material in its uncured state during storage and transport, ensuring reliability by preventing premature curing while still allowing easy identification of the package.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The light-shielding property of the container, which might be considered an additional feature, is utilized to prevent premature curing of the photocurable material. This conversion of a potential limitation (need for light protection) into a benefit ensures the material remains stable during storage while still being easy to work with during the dental procedure.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Improves operation efficiency and quality in denture production by allowing operators to accurately apply the curable material without excess or deficiency, enhancing the building and transfer process.

Implementation Method 1

a string-shaped molded body obtained by molding a photocurable denture base material having plastic deformability into a string shape

Methodology Applied

Scientific EffectPhotopolymerization: Photopolymerisation

Data Source

PatentEP4342419B1Denture base material package and method for creating denture

Publication Date: 2025.12.17 TOKUYAMA DENTAL CORP

Figure 1(a)~1(b)
Figure 2(a)~2(b)
Figure 3(a)~3(b)

AI summary

Provided are a denture base material package capable of improving operation efficiency while securing a certain or higher quality, without being influenced by an operator's skill level or the like, in the production of a denture by a production method for a denture involving using a reference denture, and a production method for a denture involving using the same. A denture base material package (10) includes: a string-shaped molded body (11) obtained by molding a photocurable denture base material having plastic deformability into a string shape; and a light-shielding member (15) having an internal space kept airtight, and accommodating the string-shaped molded body (11) in the internal space. A cross-sectional area of the string-shaped molded body (11) in a cross-section orthogonal to a longitudinal direction thereof is from 20 mm2 to 65 mm2. The light-shielding member (15) includes (i) a tray (150) having a groove (151) for accommodating the string-shaped molded body (11), and (ii) at least one kind of member selected from the group consisting of: a bag body (12) configured to house the tray (150) thereinside; and a lid member (14) configured to seal an opening of the groove (151).